service: Update ordering regarding connected preferred service

service: Update ordering regarding connected preferred service

When a new service goes online, run the service ordering check.
If the return value is -EAGAIN, neither service was preferred
and a new autoconnection attempt is done to find a preferred
service.

When a new service goes to ready state, run the service
ordering check similarly as with the online state. Since online
check will be run next, only re-attempt autoconnection when the
online check is known to have failed and the service will
stay at ready state.